A watchdog organization and a gun control advocacy group have filed a complaint with the Federal Election Commission accusing the National Rifle Association and the Trump campaign of illegally coordinating ads to influence the presidential election. The collusion amounted to an unreported and illegal multimillion-dollar contribution to massively amplify the media reach of the Trump campaign, according to the complaint.

“There is reason to believe that the NRA … made illegal, unreported and excessive in-kind contributions to Donald J. Trump for President Inc. in the form of coordinated communications,” states the complaint filed Friday by the Campaign Legal Center and the Giffords Law Center to Prevent Gun Violence.